Question: Change the data set of Table 16.1 by adding a value of the vapor pressure at 70 ¦ C of 421 torr ± 40 torr.

Change the data set of Table 16.1 by adding a value of the vapor pressure at 70^—¦C of 421 torr ± 40 torr. Find the least-squares line using both the unweighted and weighted procedures.

Table 16.1

I (K) t (°C) Vapor pressure Expected error (Torr) (Torr) 25.00 298.15 55.9 3.0 3.0 30.00 303.15 70.0 308.15 93.8 4.2 35

I (K) t (C) Vapor pressure Expected error (Torr) (Torr) 25.00 298.15 55.9 3.0 3.0 30.00 303.15 70.0 308.15 93.8 4.2 35.00 40.00 313.15 117.5 5.5 45.00 318.15 154.1 6.0 7.6 50.00 323.15 190.7 55.00 328.15 241.9 8.0 304.15 60.00 333.15 8.8 65.00 338.15 377.9 9.5

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